Start Up - Kärcher HDS 7/11-4 M Manual Del Usuario

Overflow valve with two pressure
switches
– While reducing the water supply at the
pump head or with the Servopress -
regulation the overflow valve opens and
part of the water flows back to the pump
suck side.
– If the hand-spray gun is closed, so that
the whole water flows back to the pump
suck side, the pressure switch at the
overflow valve shuts down the pump.
– If the hand spray gun is opened, the
pressure switch on the cylinder head
turns the pump back on.
The overflow valve is set by the manufac-
turer and sealed. Setting only by customer
service.
Safety valve
– The safety valve opens, when the over-
flow valve resp. the pressure switch is
broken.
The safety valve is set by the manufacturer
and sealed. Setting only by customer ser-
vice.
Water shortage safeguard
– The water shortage safeguard prevents
the burner to be turned on when there is
water shortage.
– A sieve prevents the contamination of
the safeguard and must be cleaned reg-
ular.
Temperature stop for exhaust gases
– The temperature stop switches off the
machine when the waste gases have
reached very high temperatures.

Start up

WARNING
Risk of injury! Appliance, accessories, sup-
ply lines and connections must be in fault-
free condition. If they are not in a perfect
state then the appliance must not be used.
 Lock parking brake.
Installing the handle
Figure 3
ATTENTION
Hook the electric supply line into the cable
guide of the right handle bow. Be careful
not to damage the cable.
Attach the wheel caps
Figure 4
Refill system care
Note: To protect the device, the burner is
switched off 5 hours after the system care
container is empty.
– The system care prevents the calcifica-
tion of the heating spiral while operating
with calciferous tap water. It is dosed
into the supply in the float container
drop by drop.
– The metering is set to medium water ri-
gidity by the manufacturer
Note: A sample bundle of system care is in-
cluded.
 Refill system care.
Adjusting the dosage of the system
care Advance RM 110/RM 111
 Determining the hardness of tap water:
– through the public water supply works,
– using a hardness tester (order no.
6.768-004)
Water hard-
ness (°dH)
<3
3...7
7...14
14...21
>21
 Set the service switch according to the
water hardness in the table.
Note: Observe the following when using
system care Advance 2 RM 111:
– Calcification protection: See table
– Pump care and black water protection:
Set the service switch to at least setting
3.
EN – 4
Scale on the service switch
OFF (no dosing)
1
2
3 (presetting)
4
27